Thread
:
GEC Loudspeaking telephone
View Single Post
13th Mar 2021, 12:23 pm
#
2
Pellseinydd
Heptode
Join Date: Jul 2007
Location: Flintshire, UK.
Posts: 707
Re: GEC Loudspeaking telephone
More info about the GPO version (produced by GEC) at
https://britishtelephones.com/lst2.htm
Circuit diagrams of GPO version available to Telecoms Heritage Group members via BT Archives
Pellseinydd
View Public Profile
Find More Posts by Pellseinydd